package com.pyb.dao;

/**
 * @version 1.0
 * @Author 彭彦彬
 * @Date 2025/1/15 9:33
 * @注释
 */
public interface BookDao {
    Integer getPriceByBookId(Integer bookId);
    void updateStock(Integer bookId);
    void updateBalance(Integer userId, Integer price);
}
